TWM635430U - Buffer bracket - Google Patents

Abstract

The present application provides a buffer bracket, which includes a base, a moving part, an elastic buffer member and a positioning pin. The base is provided with a hole group, and the hole group includes a plurality of positioning holes arranged along a first direction; the moving part is movably matched with the base along the first direction. The elastic buffer is elastically supported between the base and the moving part. The positioning pin is installed on the moving part. When the moving part is moved forward relative to the base along the first direction by an external force, the positioning pin is restricted to the positioning hole at corresponding position.

Description

Buffer Energy Absorbing Bracket

The utility model relates to the field of bracket structures, in particular to a buffer energy-absorbing bracket.

For example, when on-vehicle electronic equipment such as an on-board screen is installed in a vehicle, if the vehicle suddenly brakes or accidentally hits, people may hit the on-board electronic equipment, causing damage to personnel or equipment.

The utility model aims to provide a cushioning and energy-absorbing bracket to solve the problem in the known technology that accidental impacts are easy to damage personnel or equipment.

In a first aspect, an embodiment of the present application provides a buffer and energy-absorbing bracket, including a fixed seat, a movable seat, an elastic buffer and a positioning pin. The fixing seat is provided with a hole group, and the hole group includes a plurality of positioning holes arranged in sequence along the first direction; the positioning hole has a guiding surface and a back-stop surface opposite along the first direction, and in the first direction In the forward direction, the anti-retraction surface is located at the rear, and the guiding surface is located at the front. The movable seat is movably matched with the fixed seat along a first direction. The elastic buffer is elastically supported between the fixed seat and the movable seat, and is used for absorbing the impact energy of an external force acting between the fixed seat and the movable seat. The positioning pin is installed on the movable seat and elastically pressed against the fixed seat along the second direction; the positioning pin corresponds to the hole group. When the movable seat moves forward in the first direction relative to the fixed seat by an external force, the elastic buffer absorbs the impact energy to increase the elastic potential energy, and the positioning pin follows the guide surface The forward movement of the movable seat along the first direction; when the forward movement of the movable seat along the first direction stops, the positioning pin is limited to the current position by the stop surface of the positioning hole where it is currently located. hole.

The buffer energy-absorbing bracket in the embodiment of the present application can buffer and absorb energy through the elastic buffer under the impact of external force, in addition to the guiding function of the guiding surface of the positioning hole of the hole group and the anti-retreating function of the anti-retreat surface, it can be used according to The size of the impact energy of the external force makes the positioning pin stop at the corresponding positioning hole of the hole group, thereby locking the final position of the movable seat, reducing or avoiding the possibility that the elastic buffer releases the energy absorbed in reverse and causes the movable seat to rebound and cause damage.

In a possible implementation manner, the guide surface is an inclined surface, and in the forward direction of the first direction, the guide surface gradually decreases toward an opening side of the positioning hole. The retreat-preventing surface is a vertical surface, and the retreat-preventing surface is perpendicular to the first direction.

In a possible implementation manner, the hole group further includes a terminal hole, and the terminal hole is a straight hole extending along the second direction; the terminal hole is located at the front end of the hole group in the first direction in the forward direction The cross-section of the terminal hole is larger than the cross-section of the positioning pin, so that when the positioning pin moves to the corresponding terminal hole, it can elastically extend into and be limited to the terminal hole and/or in the second direction Leave the movable seat and enter the finish hole.

In a possible implementation manner, the fixing seat includes a first ring wall, the axis of the first ring wall is along the first direction; there are a plurality of hole groups, and the plurality of hole groups are distributed in the circumferential direction. the outer peripheral surface of the first ring wall. The movable seat is movably sleeved outside the first ring wall. There are a plurality of positioning pins, and the plurality of positioning pins are distributed on the movable seat along the circumferential direction, and correspond to the plurality of hole groups one by one.

In a possible implementation manner, the movable seat and the outer peripheral surface of the first ring wall are spaced apart from each other to define an annular space, and the movable seat is supported on the fixed seat by a plurality of positioning pins distributed in the circumferential direction. , and can be deflected in the annular space relative to the fixed seat; wherein, the deflection refers to the rotation of the movable seat so that the central axis of the movable seat and the central axis of the fixed seat form a certain angle.

In a possible implementation manner, one end of the positioning pin abutting against the fixing seat is hemispherical. The bottom surface of the positioning hole is a semi-cylindrical surface whose axis is along the first direction, and the guiding surface and the backstop surface are respectively connected to two axial ends of the semi-cylindrical surface. The radius of the hemisphere of the positioning pin is smaller than the radius of the semi-cylindrical surface.

In a possible implementation manner, the first ring wall defines an axially stepped hole, and the stepped hole has a first stepped surface facing the movable seat. The movable seat includes a second ring wall, a first flange and a second flange, the second ring wall is spaced around the outer periphery of the first ring wall, and the first flange is connected to the second ring wall. The ring wall is away from one end of the fixing seat, and defines a second stepped surface corresponding to the first stepped surface in the axial direction; the elastic buffer is elastically supported on the first stepped surface and the second stepped surface The compression spring between them is used to provide the elastic force to make the fixed seat and the movable seat relatively far away. The second protruding edge is connected to an end of the second ring wall close to the fixing seat, and is spaced to be sleeved on the outer periphery of the first ring wall; holes, and the positioning pins are installed in the mounting holes.

In a possible implementation manner, the energy-absorbing buffer bracket further includes a limiter, and the limiter includes a rod and a limiter connected to one end of the rod. The movable seat is provided with a through hole, the rod part is connected to the fixed seat after passing through the through hole along the first direction, and the limiting part limits the limit position where the movable seat is away from the fixed seat , the elastic buffer elastically presses the movable seat against the limiting portion.

In a possible implementation manner, the energy-absorbing buffer bracket further includes a mounting frame and a bearing. The installation frame is rotatably connected to the outer periphery of the movable seat through the bearing.

In a second aspect, the embodiment of the present application provides a buffer and energy-absorbing bracket for installing a vehicle-mounted electronic device to a vehicle. The buffer and energy-absorbing bracket includes: a fixed seat, a movable seat, an elastic buffer, a pull rod and a plurality of positioning pins. The fixing seat is used to connect to the vehicle; the fixing seat includes a first ring wall, the axis of the first ring wall is along the first direction; the outer peripheral surface of the first ring wall is provided with a plurality of hole groups, and the plurality of The group of holes is distributed along the circumferential direction of the first ring wall; the group of holes includes a plurality of positioning holes arranged in sequence along the first direction and a terminal hole; the positioning holes have opposing holes along the first direction. In the forward direction of the first direction, the anti-retraction surface is located at the rear, and the guide surface is located at the front; the terminal hole is located at the forward end of the plurality of positioning holes along the first direction , the terminal hole is a straight hole extending along the second direction; the inner side of the first ring wall defines a stepped hole extending along the first direction, and the stepped hole has a first stepped surface. The movable seat can approach the fixed seat forwardly in the first direction under the impact of external force, the movable seat includes a second ring wall, a first convex edge and a second convex edge, and the second ring wall is spaced apart Sleeved on the outer periphery of the first ring wall, the first flange is connected to an end of the second ring wall away from the fixing seat, and extends toward the inner side of the second ring wall, the first flange Define a second stepped surface corresponding to the first stepped surface and the end surface of the first ring wall along the first direction; the first convex edge is provided with a passage corresponding to the end surface of the first ring wall along the first direction The hole; the second protruding edge is connected to an end of the second ring wall close to the fixing seat, and is spaced around the outer periphery of the first ring wall, and defines an annular space with the second ring wall. The elastic buffer is disposed inside the first ring wall and the second ring wall, and elastically supported between the first step surface and the second step surface. The pull rod includes a rod portion and a limiting portion connected to one end of the rod portion; the rod portion passes through the through hole along the first direction and is connected to the end surface of the fixing seat, and the limiting portion is located at The first protruding edge is away from the side of the fixing seat, and the elastic buffer member elastically presses the first protruding edge against the limiting portion. A plurality of the positioning pins are installed on the second flange respectively, and correspond to the plurality of hole groups one by one; the positioning pins are elastically pressed against the fixing seat along the second direction. When the movable seat is impacted by an external force and moves forward relative to the fixed seat in the first direction, the elastic buffer absorbs the impact energy to increase the elastic potential energy, and the positioning pin follows the guidance of the guide surface. The forward movement of the movable seat along the first direction; when the forward movement of the movable seat along the first direction stops, the positioning pin is limited by the stop surface of the positioning hole where it is currently located. the pilot hole or be limited to the terminal hole.

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some, not all, embodiments of the application.

It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical", "horizontal", "left", "right" and similar expressions are used herein for the purpose of description only.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein in the description of the application is only for the purpose of describing specific embodiments, and is not intended to limit the application. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Some implementations of this application are described in detail. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

Example

Referring to FIG. 1 , this embodiment provides a vehicle 300 (such as a fuel vehicle or an electric vehicle), which is equipped with an on-board electronic device 200 (such as a smart screen). The in-vehicle electronic device 200 can be installed on the vehicle 300, for example, on the driver's cab of the vehicle 300, for providing road condition information and the like according to the needs of the driver.

When the vehicle 300 brakes suddenly or accidentally collides while driving, the driver or passengers may hit the in-vehicle electronic device 200 .

In this embodiment, a buffer and energy-absorbing bracket 100 is provided, and the buffer and energy-absorbing bracket 100 is fixed to a vehicle 300 for installing a vehicle-mounted electronic device 200 . When the vehicle-mounted electronic device 200 is hit, the buffer and energy-absorbing bracket 100 can absorb the impact energy generated by the impact, and the vehicle-mounted electronic device 200 can adaptively retreat to a corresponding position according to the impact intensity without rebounding. The specific implementation will be given below.

Referring to FIG. 2 to FIG. 6 , this embodiment provides a cushioning and energy-absorbing bracket 100 , including a fixed seat 10 , a movable seat 11 , an elastic buffer 12 and a positioning pin 13 . The fixed base 10 is used to be installed on the vehicle 300 , and the movable base 11 is movably matched with the fixed base 10 and used for installing the vehicle electronic device 200 . The elastic buffer 12 is elastically supported between the fixed seat 10 and the movable seat 11 , and the positioning pin 13 is installed on the movable seat 11 and can compress the elastic buffer 12 together with the movable seat 11 , and is locked at a certain position of the fixed seat 10 .

Wherein, the fixing seat 10 is provided with a hole group 14 , and the hole group 14 includes a plurality of positioning holes 15 sequentially arranged along the first direction 18 . The positioning hole 15 has a guide surface 16 and a backstop surface 17 facing each other along the first direction 18 , and in the forward direction 20 of the first direction 18 , the backstop surface 17 is located at the rear and the guide surface 16 is located at the front. Conversely, in the rearward direction 20 a of the first direction 18 , the anti-retraction surface 17 is located in front and the guide surface 16 is located in the rear. Optionally, the fixing seat 10 includes a first ring wall 21 , and the axis of the first ring wall 21 is along the first direction 18 . The outer peripheral surface of the first ring wall 21 is provided with a plurality of hole groups 14 , and the plurality of hole groups 14 are distributed along the circumferential direction of the first ring wall 21 . The hole group 14 includes a plurality of positioning holes 15 and a terminal hole 22 arranged in sequence along the first direction 18 . The positioning hole 15 has a guide surface 16 and a backstop surface 17 facing each other along the first direction 18 , and in the forward direction 20 of the first direction 18 , the backstop surface 17 is located at the rear and the guide surface 16 is located at the front. The terminal hole 22 is located at one end of the forward direction 20 of the plurality of positioning holes 15 along the first direction 18. The terminal hole 22 is a straight hole extending along the second direction 19, wherein the straight hole can be a cylindrical hole; the inner side of the first ring wall 21 defines a The stepped hole 23 extending in the first direction 18 has a first stepped surface 24 .

Optionally, the guide surface 16 is an inclined surface, and in the forward direction 20 of the first direction 18 , the guide surface 16 gradually decreases toward the opening side of the positioning hole 15 . The anti-retraction surface 17 is a vertical surface, and the anti-retraction surface 17 is perpendicular to the first direction 18 . As shown in the figure, the section of the positioning hole 15 in the plane defined by the first direction 18 and the depth direction of the positioning hole 15 is a right-angled trapezoid. Face 16.

The movable seat 11 is movably matched with the fixed seat 10 along the first direction 18, and can approach the fixed seat 10 along the forward direction 20 of the first direction 18 under the impact of external force. The movable seat 11 includes a second ring wall 25, a first convex Along the edge 26 and the second convex edge 27, the second ring wall 25 is sleeved on the outer periphery of the first ring wall 21 at intervals, and the first convex edge 26 is connected to the end of the second ring wall 25 away from the fixing seat 10, and extends toward the second ring wall. 25, the first convex edge 26 defines a second stepped surface 28 corresponding to the first stepped surface 24 and the end surface of the first ring wall 21 along the first direction 18; The through hole on the end face of the first ring wall 21; the second convex edge 27 is connected to an end of the second ring wall 25 close to the fixed seat 10, and is spacedly sleeved on the outer periphery of the first ring wall 21, and is defined with the second ring wall 25 An annular space 29 .

The elastic buffer 12 is elastically supported between the fixed seat 10 and the movable seat 11 for absorbing the impact energy of an external force acting on the fixed seat 10 and the movable seat 11 . Optionally, the elastic buffer 12 is a compression spring elastically supported between the first stepped surface 24 and the second stepped surface 28 , and is used to provide an elastic force for relatively moving the fixed seat 10 and the movable seat 11 away from each other.

In this embodiment, the energy absorbing bracket 100 further includes a plurality of limiting parts 30 . The limiting member 30 is a pull rod 31 , the pull rod 31 is connected to the fixed seat 10 , and the movable seat 11 is connected to the pull rod 31 and can limit the limit position of the movable seat 11 away from the fixed seat 10 . Optionally, the pull rod 31 includes a rod portion 32 and a limiting portion 33 connected to one end of the rod portion 32; the rod portion 32 passes through the through hole along the first direction 18 and is connected to the end surface of the fixing base 10, and the limiting portion 33 is located at The first protruding edge 26 is far away from the side of the fixing base 10 , and the elastic buffer member 12 elastically presses the first protruding edge 26 against the limiting element portion 33 .

The positioning pin 13 is installed on the movable seat 11 and elastically presses against the fixed seat 10 along the second direction 19 ; the positioning pin 13 corresponds to the hole group 14 . Optionally, there are multiple positioning pins 13, and the multiple positioning pins 13 are installed on the second flange 27 respectively, and correspond to the multiple hole groups 14 one by one; the positioning pins 13 are elastically pressed against the fixed edge along the second direction 19 Seat 10.

In this embodiment, when the movable seat 11 is impacted by an external force and moves relative to the fixed seat 10 in the forward direction 20 of the first direction 18, the elastic buffer member 12 absorbs the impact energy to increase the elastic potential energy, and the positioning pin 13 moves on the guide surface 16 Under the guidance of the movable seat 11 moving forward 20 along the first direction 18; when the movable seat 11 stops moving forward 20 along the first direction 18, the positioning pin 13 is limited by the stop surface 17 of the positioning hole 15 where it is currently located The positioning hole 15 where it is currently located or is limited to the end hole 22 .

The buffer energy-absorbing bracket 100 in the embodiment of the present application can buffer and absorb energy through the elastic buffer member 12 under the action of external impact, in addition to the guiding function of the guiding surface 16 of the positioning hole 15 of the hole group 14 and the anti-retraction surface 17. The anti-retraction function can stop the positioning pin 13 at the corresponding positioning hole 15 of the hole group 14 according to the magnitude of the impact energy of the external force, thereby locking the final position of the movable seat 11, reducing or avoiding the reverse release of energy absorbed by the elastic buffer 12 Cause movable seat 11 to rebound and cause the possibility of injury.

In this embodiment, optionally, the section of the terminal hole 22 is larger than the section of the positioning pin 13, so that when the positioning pin 13 moves to the corresponding terminal hole 22, it can elastically extend into and be limited to the terminal hole 22 and/or along the The second direction 19 exits the movable seat 11 and enters the terminal hole 22 .

In this embodiment, optionally, the outer peripheral surfaces of the movable seat 11 and the first ring wall 21 are spaced apart from each other to define an annular space 29, the movable seat 11 is supported on the fixed seat 10 by a plurality of positioning pins 13 distributed in the circumferential direction, and can Deflection relative to the fixed seat 10 in the annular space 29 ; wherein, the deflection refers to the rotation of the movable seat 11 so that the central axis of the movable seat 11 and the central axis of the fixed seat 10 form a certain angle.

In this embodiment, the positioning pin 13 includes a sleeve 34 , a pin 35 and a support spring 36 . One end of the pin 35 is hemispherical for abutting against the fixing seat 10 and matching with the positioning hole 15 ; A mounting hole 37 penetrating in the second direction 19 is provided on the second protruding ring, and the sleeve 34 is slidably installed in the mounting hole 37, and the side of the sleeve 34 close to the fixing base 10 is provided with an enlarged first flange 26, the first The protruding edge 26 can prevent the sleeve 34 from exiting the installation hole 37 toward the side away from the fixing base 10 along the second direction 19 . The bottom surface 42 of the positioning hole 15 is a semi-cylindrical surface whose axis is along the first direction 18 , and the guiding surface 16 and the backstop surface 17 are respectively connected to the axial ends of the semi-cylindrical surface. The radius of the hemispherical shape of the positioning pin 13 is smaller than the radius of the semicylindrical surface.

The second protruding edge 27 is connected to one end of the second ring wall 25 close to the fixed seat 10, and is sheathed on the outer periphery of the first ring wall 21 at intervals; the second protruding edge 27 is provided with a mounting hole 37 extending along the second direction 19 for positioning The pin 13 is attached to the attachment hole 37 .

In this embodiment, the energy-absorbing buffer bracket 100 may further include a mounting frame 38 and a bearing 39 , and the mounting frame 38 is rotatably connected to the outer periphery of the movable seat 11 through the bearing 39 . The shape of the mounting frame 38 can be set to be suitable for mounting the vehicle-mounted electronic device 200 to be installed. In this way, the mounting bracket 38 and the vehicle electronic device 200 installed thereon can rotate relative to the movable base 11 .

The usage method and operating principle of the buffer energy-absorbing bracket 100 in the embodiment of the present application will be described in detail below.

The on-vehicle electronic device 200 is installed on the vehicle 300 through the buffer energy-absorbing bracket 100 , such as installed in the cab of the vehicle 300 . Firstly, when the vehicle-mounted electronic device 200 is mounted on the mounting frame 38 of the energy-absorbing buffer bracket 100, it can rotate with the mounting frame 38 relative to the movable seat 11 in a circumferential direction to adjust the angle of the vehicle-mounted electronic device 200, which is convenient for use. In the installed state, the movable seat 11 is supported on the fixed seat 10 along the circumferential direction by a plurality of positioning pins 13 .

When the vehicle 300 brakes suddenly or accidentally collides, if the occupant in the cab hits the vehicle-mounted electronic device 200, the impact force will cause the vehicle-mounted electronic device 200, the mounting frame 38 and the movable seat 11 to move together in the forward direction 20 of the first direction 18. The movable seat 11 will compress the elastic buffer 12 , convert at least part of the impact energy into the elastic potential energy of the elastic buffer 12 , and reduce the speed of the vehicle electronic device 200 , the mounting frame 38 and the movable seat 11 . During this process, the pins 35 of each positioning pin 13 are elastically pressed against the outer surface of the first ring wall 21 under the elastic support of the support spring 36, and move along the hole group 14 together with the movable seat 11, and pass through each guide The guidance of the surface 16 passes through several positioning holes 15 at the rear in sequence until it stops together with the movable seat 11 and is limited to the current positioning hole 15 . At this time, although the elastic buffer 12 is still in a compressed state, because the stop surface 17 of the positioning hole 15 blocks the pin 35, the movable seat 11 and the vehicle-mounted electronic device 200 connected thereto will not be rebounded by the elastic buffer 12 , to avoid secondary damage.

When the impact force is large enough, the movable seat 11 will drive the positioning pin 13 to move forward through all the positioning holes 15, and snap into the terminal hole 22 to realize the final stop. After the movable seat 11 stops, the positioning pin 13 can be pushed into the terminal hole 22 along the second direction 19, and the mutual connection between the movable seat 11 and the fixed seat 10 can be released, so that it can be easily disassembled and reinstalled to the initial position, which is convenient Restores its cushioning energy-absorbing ability to prevent the next possible accidental impact.

In addition, when the impact force is eccentric, due to the arrangement of the annular space 29 between the movable seat 11 and the fixed seat 10 , the movable seat 11 can deflect at a certain angle relative to the fixed seat 10 . At this time, the positioning pins 13 at different positions in the circumferential direction may be stuck in the positioning holes 15 at different positions.

Optionally, referring to FIG. 6 , a plurality of locking screws 40 distributed along the circumferential direction may also be arranged between the movable seat 11 and the fixed seat 10 . A plurality of locking screws 40 pass through the movable seat 11 along the second direction 19 and are screwed to the fixed seat 10, so as to fix and lock the movable seat 11 on the fixed seat 10. At this time, the movable seat 11 and the fixed seat 10 are relatively locked. , the vehicle-mounted electronic device 200 is fixedly installed, and cannot move relatively to achieve the effect of buffering and absorbing energy. When it is necessary to restore the energy-absorbing effect of the energy-absorbing bracket 100 , all the locking screws 40 need to be removed, so that the movable seat 11 is supported on the fixed seat 10 through a plurality of positioning pins 13 .

Based on the above description, the buffer energy-absorbing bracket 100 in the embodiment of the present application has at least one of the following beneficial effects:

1. The buffer energy-absorbing structure allows the movable seat 11 to drive the vehicle-mounted electronic equipment 200 to compress the elastic buffer 12 through the cooperation of the hole group 14 and the positioning pin 13 when it is hit, so as to buffer the impact effect. The anti-retraction surface 17 can prevent the movable part from driving the in-vehicle electronic device 200 to rebound and cause secondary damage.

2. When the impact force is large enough, the positioning pin 13 can be snapped into the terminal hole 22 and withdraw from the terminal hole 22, so as to facilitate reinstallation and restore the buffering energy absorption capacity.

3. When the impact force is eccentric, the movable seat 11 can deflect by a certain angle relative to the fixed seat 10 through the annular space 29 .

The above embodiments are only used to illustrate the technical solutions of the present application without limitation. Although the present application has been described in detail with reference to the above preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present application can be modified or equivalently replaced All should not deviate from the spirit and scope of the technical solution of the present application.

300: Vehicles 200: Vehicle electronic equipment 100: Buffer energy-absorbing bracket 10: Fixed seat 11: movable seat 12:Elastic buffer 13: Locating pin 14: hole group 15: positioning hole 16: Guide surface 17: Backstop surface 18: First Direction 19: Second direction 20: Forward 20a: backward 21: The first ring wall 22: End hole 23: step hole 24: The first step surface 25: Second ring wall 26: The first convex edge 27: Second convex edge 28: The second step surface 29: Ring space 30: limit piece 31: pull rod 32: stem 33: limit part 34: Suite 35:pin 36: support spring 37: Mounting hole 38: Mounting frame 39: Bearing 40: locking screw 42: Hole Bottom

In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the accompanying drawings in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the utility model, and therefore should not It is regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

Fig. 1 is the schematic diagram after the vehicle installs buffer energy-absorbing support and vehicle-mounted electronic equipment in the embodiment of the present application;

Fig. 2 is a three-dimensional view of the buffer energy-absorbing bracket in the embodiment of the present application;

Fig. 3 is an expanded view of the buffer energy-absorbing bracket of Fig. 2;

Fig. 4 is a longitudinal sectional view of the buffer energy-absorbing bracket of Fig. 2;

Fig. 5 is an enlarged view at A of the buffer energy-absorbing bracket of Fig. 4;

FIG. 6 is a transverse cross-sectional view of the energy-absorbing bracket in FIG. 2 .

10: Fixed seat

11: movable seat

12:Elastic buffer

13: Locating pin

14: hole group

21: The first ring wall

23: step hole

24: The first step surface

25: Second ring wall

26: The first convex edge

27: Second convex edge

28: The second step surface

29: Ring space

30: limit piece

31: pull rod

32: stem

33: limit part

38: Mounting frame

39: Bearing

Claims (10)

A cushioning energy-absorbing bracket comprising: A fixing seat, the fixing seat is provided with a hole group, and the hole group includes a plurality of positioning holes arranged in sequence along the first direction; the positioning hole has a guide surface and a back-stop surface opposite along the first direction, and In the forward direction of the first direction, the anti-retraction surface is located at the rear, and the guiding surface is located at the front; a movable seat, the movable seat is movably matched with the fixed seat along a first direction; an elastic buffer, the elastic buffer is elastically supported between the fixed seat and the movable seat, and is used to absorb the impact energy of an external force acting between the fixed seat and the movable seat; A positioning pin, the positioning pin is installed on the movable seat, and is elastically pressed against the fixed seat along the second direction; the positioning pin corresponds to the hole group; When the movable seat moves forward in the first direction relative to the fixed seat by an external force, the elastic buffer absorbs the impact energy to increase the elastic potential energy, and the positioning pin follows the guide surface The forward movement of the movable seat along the first direction; when the forward movement of the movable seat along the first direction stops, the positioning pin is limited to the current position by the stop surface of the positioning hole where it is currently located. hole. The buffer energy-absorbing bracket as described in claim item 1, wherein: The guide surface is an inclined surface, and in the forward direction of the first direction, the guide surface gradually decreases toward the opening side of the positioning hole; The retreat-preventing surface is a vertical surface, and the retreat-preventing surface is perpendicular to the first direction. The buffer energy-absorbing bracket as described in claim item 1, wherein: The hole group also includes a terminal hole, the terminal hole is a straight hole extending along the second direction; the terminal hole is located at the front end of the hole group in the first direction; the cross section of the terminal hole is larger than The cross-section of the positioning pin is such that when the positioning pin moves to the corresponding terminal hole, it can elastically extend into and be limited to the terminal hole and/or leave the movable seat along the second direction and enter the terminal hole . The buffer energy-absorbing bracket as described in any one of claim items 1 to 3, wherein: The fixing seat includes a first ring wall, the axis of the first ring wall is along the first direction; there are multiple hole groups, and the plurality of hole groups are distributed on the outer periphery of the first ring wall along the circumferential direction noodle; The movable seat is movably sleeved outside the first ring wall; There are a plurality of positioning pins, and the plurality of positioning pins are distributed on the movable seat along the circumferential direction, and correspond to the plurality of hole groups one by one. The buffer energy-absorbing bracket as described in claim item 4, wherein: The movable seat and the outer peripheral surface of the first ring wall are spaced apart from each other to define an annular space, The movable seat is supported on the fixed seat through a plurality of positioning pins distributed in the circumferential direction, and can deflect in the annular space relative to the fixed seat; wherein, the deflection means that the movable seat rotates to make The central axis of the movable seat and the central axis of the fixed seat rotate at a certain angle. The buffer energy-absorbing bracket as described in claim item 5, wherein: One end of the positioning pin against the fixed seat is hemispherical; The bottom surface of the positioning hole is a semi-cylindrical surface whose axis is along the first direction, and the guide surface and the backstop surface are respectively connected to the axial ends of the semi-cylindrical surface; The radius of the hemisphere of the positioning pin is smaller than the radius of the semi-cylindrical surface. The buffer energy-absorbing bracket as described in claim item 4, wherein: The first ring wall defines a stepped hole in the axial direction, and the stepped hole has a first stepped surface facing the movable seat; The movable seat includes a second ring wall, a first flange and a second flange, the second ring wall is spaced around the outer periphery of the first ring wall, and the first flange is connected to the second ring wall. The ring wall is away from one end of the fixing seat, and defines a second stepped surface corresponding to the first stepped surface in the axial direction; the elastic buffer is elastically supported on the first stepped surface and the second stepped surface The compression spring between is used to provide the elastic force that makes the fixed seat and the movable seat relatively far away; The second protruding edge is connected to an end of the second ring wall close to the fixing seat, and is spaced to be sleeved on the outer periphery of the first ring wall; holes, and the positioning pins are installed in the mounting holes. The buffer energy-absorbing bracket as described in claim item 7, wherein: The buffer energy-absorbing bracket also includes a limiter, and the limiter includes a rod and a limiter connected to one end of the rod; The movable seat is provided with a through hole, the rod part is connected to the fixed seat after passing through the through hole along the first direction, and the limiting part limits the limit position where the movable seat is away from the fixed seat , the elastic buffer elastically presses the movable seat against the limiting portion. The buffer energy-absorbing bracket as described in claim item 8, wherein: The buffer energy-absorbing bracket also includes a mounting frame and a bearing; The installation frame is rotatably connected to the outer periphery of the movable seat through the bearing. A buffer energy-absorbing bracket for installing a vehicle-mounted electronic device to a vehicle, comprising: The fixing seat is used to connect to the vehicle; the fixing seat includes a first ring wall, the axis of the first ring wall is along the first direction; the outer peripheral surface of the first ring wall is provided with a plurality of hole groups, a plurality of The group of holes is distributed along the circumferential direction of the first ring wall; the group of holes includes a plurality of positioning holes arranged in sequence along the first direction and a terminal hole; the positioning holes have For the opposite guide surface and the anti-retraction surface, in the forward direction of the first direction, the anti-retreat surface is located at the rear, and the guide surface is located at the front; the terminal hole is located in the forward direction of the plurality of positioning holes along the first direction At one end, the terminal hole is a straight hole extending along the second direction; the inner side of the first ring wall defines a stepped hole extending along the first direction, and the stepped hole has a first stepped surface; A movable seat, the movable seat can approach the fixed seat forwardly in the first direction under the impact of an external force, the movable seat includes a second ring wall, a first convex edge and a second convex edge, the second ring The walls are sheathed on the outer periphery of the first ring wall at intervals, the first protruding edge is connected to the end of the second ring wall away from the fixing seat, and extends toward the inner side of the second ring wall. A convex edge defines a second stepped surface corresponding to the first stepped surface and the end surface of the first ring wall along the first direction; the first convex edge defines a second stepped surface corresponding to the first ring wall along the first direction A through hole on the end surface; the second convex edge is connected to an end of the second ring wall close to the fixing seat, and is spaced to be sleeved on the outer periphery of the first ring wall, and defines a ring with the second ring wall shape space; an elastic buffer, the elastic buffer is arranged inside the first ring wall and the second ring wall, and is elastically supported between the first step surface and the second step surface; A pull rod, the pull rod includes a rod part and a limiting part connected to one end of the rod part; the rod part passes through the through hole along the first direction and is connected to the end surface of the fixing seat, and the limiting part The part is located on the side away from the fixing seat of the first protruding edge, and the elastic buffer elastically presses the first protruding edge against the limiting part; A plurality of positioning pins, the plurality of positioning pins are installed on the second flange respectively, and correspond to the plurality of hole groups one by one; the positioning pins are elastically pressed against the fixing seat along the second direction ; When the movable seat is impacted by an external force and moves forward relative to the fixed seat in the first direction, the elastic buffer absorbs the impact energy to increase the elastic potential energy, and the positioning pin follows the guidance of the guide surface. The forward movement of the movable seat along the first direction; when the forward movement of the movable seat along the first direction stops, the positioning pin is limited by the stop surface of the positioning hole where it is currently located. the pilot hole or be limited to the terminal hole.

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